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Gusty, Sri
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Journal : Astonjadro

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Analysis of the Level of Landslide Susceptibility in the Sakuli Latambaga Area, Southeast Sulawesi Rasmita, Riza; Chaerul, Muhammad; Marzuki, Ismail; Gusty, Sri; Indrayani, Poppy; Sinardi, Sinardi
ASTONJADRO Vol. 13 No. 2 (2024): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v13i2.15173

Abstract

The vulnerability of landslides that occur in the Sakuli area, Kolaka Regency is related to topographic conditions which are dominated by mountains and hills, for this reason, research is needed as an effort to determine the level of vulnerability and determine disaster mitigation efforts against the danger of landslides. This type of research is quantitative descriptive by looking at the influence of each variable to analyze landslide-prone areas. The method used in this research is experimental analysis with direct observation in the field. From the research results, the vulnerability level value for the slope parameter was 0.83; with soil texture 0.408; for faults 0.86; value for regolith 0.363; with geological conditions 0.628; with a rainfall value of 0.3 and land use of 0.6, the accumulated value is that the research area is at a very vulnerable level with a value of 3.989. Therefore, this area really needs structural and non-structural mitigation to be able to protect and reduce the potential for landslides.
Marshall Test Comparison of Asphalt Mix PG 70 and Asphalt Pen 60/70 Based on Bina Marga General Specification Putri, Mutiara Mentari; Gusty, Sri; Indrayani, Poppy
ASTONJADRO Vol. 14 No. 3 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i3.17847

Abstract

Marshall Test Mix Asphalt PG 70 and Asphalt Pen 60/70. Marshall aims to determine the characteristic of the dough in the test object. In this case to know the values of durability (stability), melting (flow), & marshall Qouintient. The Marshall tool is a pressure sensor which is equipped with a proving ring with a capacity of 22.5 KN or 5000 IBS. The proving ring is equipped with a measuring watch which is useful for measuring the stability of the dough. Apart from that, there is still a flow meter to measure plastic melting, because the basic principle of the Marshall method is inspection of stability & melting (flow), and analysis of density & pores based on the dough that is formed. The dough design of the Marshall method was discovered by Bruce Marshall, & has been standardized by ASTM or AASHTO through several modifications, namely ASTM D 1559-76, or 27 AASHTO T T-245-90. The standard Marshall Test object is a cylinder with a diameter of 4 inches (10,16 cm) and a heigt of 2,5 inches (6,35 cm).
Analysis of the Utilization of Hair Fibers as an Eco-Friendly Concrete Construction Material Iqbal, M.; Bachtiar, Erniati; Gusty, Sri; Indrayani, Poppy; Marzuki, Ismail; Chaerul, Muhammad
ASTONJADRO Vol. 14 No. 3 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i3.17921

Abstract

The handling of human hair waste is still not optimal, as it is often discarded or burned, leading to environmental pollution. This research aims to utilize human hair waste as a mixture in normal concrete, resulting in a fiber-reinforced concrete product with marketable value, providing a more beneficial use compared to simply being disposed of or burned. The purpose of this study is to analyze the mechanical properties of concrete using human hair fibers. The mechanical properties to be analyzed include compressive strength, tensile splitting strength, and flexural strength. This research is based on laboratory experiments. The variations in the amount of fiber used in the study are 0.25%, 0.5%, 1%, and 1.5% of the cement weight in the concrete mix. Based on the results of mechanical property testing, it can be concluded that the optimal addition of 1% human hair fibers yielded a compressive strength of 22.86 MPa, tensile splitting strength of 2.69 MPa, and flexural strength of 4.13 MPa.
Determination of Flow Direction and Catchment Area Model Using Quantum GIS Analysis and Remote Sensing Imagery at Nickel Mining Locations Syarifudin, Erick; Chaerul, Muhammad; Gusty, Sri
ASTONJADRO Vol. 14 No. 3 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i3.18805

Abstract

The research location is located at IUP PT. IFISHDECO, Tbk (122.168° - 122.204° East Longitude (BT) and 4.371° - 4.404° South Latitude (LS), Tinanggea, South Konawe Regency, Southeast Sulawesi Province.. The study aims to determine the surface flow direction and catchment area model at nickel mining sites. The data is in the form of topographic data measured with a total station, by conducting spatial analysis with Quantum GIS (QGIS) and remote sensing with the Strahler method in determining the river network. The results of research conducted at the research location obtained 3 catchment areas, namely Catchment 1 covering an area of 19,021 Ha, catchment 2 covering an area of 32,691 Ha and Catchment 3 covering an area of 59.77 Ha which can be used in further analysis in the mining drainage system.
Sediment Characteristics of Iron Ore Waste on the Surface of Settling Ponds K., Agus Prabowo; Gusty, Sri; Desy, Natsar
ASTONJADRO Vol. 14 No. 4 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i4.18944

Abstract

The Iron Ore Refining Industry in North Maluku, There is waste generated from the iron ore refining or extraction process that is deposited into a settling pond or shelter with a capacity of about 3 million cubic meters that is no longer in operation, This study describes the characteristics of iron ore waste sediments on the surface of the settling pond, with laboratory methods, namely testing physical properties based on SNI references for aggregate materials and identifying chemical compound elements with EDS. The physical characteristics of waste sediments have absorption of 3.20%, surface dry specific gravity of 3.11 gr/cc, sand equivalent of 94.4%, Modulus of Smoothness of 2.78 and Mud Content of 6.40% while for the content of chemical compounds contained in iron ore waste sediments based on the molar percentage of oxides, the highest is Iron oxide (FeO) of 70.08% then below that there is Silicon dioxide SiO2) of 18.29%.
Microstructure of Asphalt Mixtures Using Empty Palm Oil Bunch Waste as Filler Based on Road Engineering Association of Malaysia (Ream) Specifications Muslika, Muslika; Gusty, Sri; Chaerul, Muhammad
ASTONJADRO Vol. 14 No. 4 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i4.18946

Abstract

Performance of Hollow Asphalt Mixtures Using Empty Palm Oil Bunches Waste Based on Road Engineering Association of Malaysia (Ream) Specifications. One of the road pavement technologies currently being developed is porous asphalt. One of the materials used in flexible pavement mixtures is filler, one of which is ash. stone, which is in limited supply and relatively expensive. One alternative solution is to use empty oil palm fruit bunches. waste as an alternative material in the asphalt mixture. The aim of this research is what is the microstructure of asphalt mixtures that use empty oil palm fruit bunches as filler. This research uses the specifications of the Road Engineering Association of Malaysia (REAM, 2008). From the results of the research carried out, it can be concluded that the use of stone ash filler from empty palm fruit fruit bunches in hollow asphalt mixtures with variations of 2.5%, 5% and 7.5% shows that the granules are dense with voids that cover each other with varying sizes. This is in line with the stability value obtained from the Marshall test. Which has increased due to interlocking of interlocking grains. Meanwhile, from the EDS test results on the composition of chemical elements, it is known that the element contained in the hollow asphalt sample mixed with ash from burning empty oil palm fruit bunches with the highest compound composition is the element Boron at 66.55%, which is different from the chemical composition test for burning ash from bunch waste. The highest compound composition based on atomic percentage is Potassium (K) at 31.6%.
The Effect of Using Iron Ore Sediment Waste as a Substitute for Fine Aggregate on Concrete Characteristics Idrus, Muhammad; Gusty, Sri; Chaerul, Muhammad
ASTONJADRO Vol. 14 No. 4 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i4.18963

Abstract

Concrete is the main material in infrastructure development throughout the world. Its high mechanical strength and durability make it the main choice in various construction applications, from roads to high-rise buildings. However, behind its benefits, concrete production also triggers serious environmental problems. Natural aggregates such as river sand are used on a large scale. One of the materials that can be used as a substitute for fine aggregate is iron ore sediment waste. This study aimed to analyze the characteristics of fresh concrete using iron ore sediment waste as a substitute for fine aggregate using experimental methods. This study aimed to analyze the characteristics of fresh concrete using iron ore sediment waste as a substitute for fine aggregate using experimental methods. From the results of testing iron ore sediment waste aggregates such as the characteristics of iron ore sediment waste aggregates, 71% met the requirements as a material for making concrete, except for the mud content and organic content so special treatment is needed, namely the iron ore sediment waste material must be washed clean before use. The characteristics of iron ore sediment waste concrete have requirements from the average slump test value of 9 cm and there is no segregation and bleeding in the fresh concrete mixture.
Thermal Comfort Level Analysis to Support Energy Efficiency Based on Building Information Modeling (BIM) (Case Study of Fajar University Postgraduate Building) Wahyuningsih, Sri; Gusty, Sri; Chaerul, Muhammad
ASTONJADRO Vol. 14 No. 4 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i4.19052

Abstract

Indonesia faces significant challenges regarding energy consumption in the building sector, which continues to rise alongside urbanization and economic growth. Energy use in commercial buildings, particularly office and educational facilities, significantly contributes to the national total energy consumption, with HVAC (Heating, Ventilation, and Air Conditioning) systems being a major component of building energy consumption. By modeling HVAC systems, natural lighting, and thermal insulation, Building Information Modeling (BIM) can help optimize energy usage and reduce operational costs in buildings. However, despite the proven benefits of BIM in energy analysis and thermal comfort, challenges remain in its implementation. Many construction projects still rely on traditional methods that are less effective in integrating data and analysis. Additionally, a lack of understanding about BIM usage among construction professionals also hinders the achievement of optimal energy efficiency.
Analysis of the Use of Palm Shells as a Substitute for Fine Aggregate on the Water Absorption of Concrete Iswady, Iswady; Gusty, Sri; Chaerul, Muhammad
ASTONJADRO Vol. 14 No. 4 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i4.19091

Abstract

Concrete, as one of the main elements in construction, has received special attention and is commonly used in infrastructure development in various countries in the world. High-quality concrete is increasingly needed along with the increasing need for infrastructure, such as towers, high-rise buildings, and long-span bridges. This type of concrete is made with a low amount of FAS; FAS or water-to-cementitious ratio is the ratio of the total weight of water to the total weight of cement in the concrete mixture. The purpose of this study is to analyze the water absorption of concrete using palm shells as a substitute for fine aggregate using an experimental method by curing. From the results of testing palm shells such as the water absorption value which is directly proportional to the increasing percentage of CKS use as a substitute for fine aggregate, it show that the use of CKS as a substitute for fine aggregate in normal concrete increases the water absorption of concrete, the higher the percentage of palm shell substitution, the higher the percentage of absorption value obtained.
Evaluation of Railway Infrastructure on Track Quality Index (TQI) Based Track Quality (Cross of Mandai - Garongkong) 2024 Wibowo, Arief Hadi; Desy, Natsar; Gusty, Sri
ASTONJADRO Vol. 15 No. 1 (2026): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v15i1.19642

Abstract

Infrastructure quality greatly affects the speed, comfort, and safety of train travel. High speed can cause damage to the railroad track which can cause a decrease in the TQI value and increase the risk of train accidents. This study aims to analyze the factors influencing train speed, analyze the speed of railway facilities on track quality based on Track Quality Index, and analyze optimization strategies to keep the Track Quality Index (TQI) within the operating speed threshold in 2024. The method used in this research is mix method. The results showed that the factors affecting train speed across Mandai-Garongkong are the condition of the rail line and Track Quality Index (TQI), track geometry and rail infrastructure, characteristics of rolling stock, external environment, and operational management and speed regulation, so that the optimization strategy needed to enable optimal operational speed is the implementation of preventive and corrective maintenance strategies, real-time TQI monitoring with observation technology, and operational management based on observation results. Based on the calculation of the Track Quality Index (TQI) value on each track plot, it is found that the average TQI value is above 10, while the average operational speed is above 30 km/h, although the average TQI value is above 10, the operational speed can still be maintained above 30 km/h. It is recommended to immediately bring in facilities with speeds capable of maximizing the existing TQI value on the South Sulawesi crossing.
Co-Authors Abu, Arman Amir Mahmud Anugrah, Anugrah Arief Hadi Wibowo, Arief Hadi Artawan, I Putu Arwansyah Arwansyah Ashraf, Ashraf Asmeati Asmeati, Asmeati Batara, Chris Chaeruel, M Desi, Natsar Desy, Natsar Erniati Bachtiar Erniati Erniati Fatmeriany, Fatmeriany Firdaus Fidaus Firdaus Firdaus Harun, A. Muh. Yusuf Hasibuan, Parlindungan Ismail Marzuki Iswady, Iswady K., Agus Prabowo Lismawati, Lismawati Londongsalu, Jefryanto M. Iqbal Mahmud Mahmud Miftakhul Huda Muh. Chaerul, Muh. Muhammad Chaerul Muhammad Idrus Muslika, Muslika Musma, Saddam Nur Khaerat Nur, Nur Khaerat Nurdyansyah, Haris Pakki, Ibrahim POPPY INDRAYANI, POPPY Puspitarini, Made Dianing Putri, Herwina Rahayu Putri, Mutiara Mentari Rachim, Yunus Rachman, David Sumantri Rasmita, Riza Ritnawaty, Ritnawaty Sinardi, Sinardi Sukamto, Ika Sumiyarsi sulkarnain, sulkarnain Syafar, A.Muhammad Syarifudin, Erick Wahyuningsih A., Sri Waris, Milawaty Wintari, Ni Kadek